We discuss the properties of the gas of primordial “stringy” black holes possibly formed in the high-curvature phase preceding the bouncing transition to the phase of standard cosmological evolution. We show that the regime dominated by such a string-hole gas can be consistently described by explicit solutions of the string effective action including first-order alpha' corrections. We present a phase space analysis of the stability of such solutions comparing the results obtained from different actions and including the possibility of O(d,d)-symmetric configurations.
Stringy black-hole gas in α′-corrected dilaton gravity
Gasperini, Maurizio;
2018-01-01
Abstract
We discuss the properties of the gas of primordial “stringy” black holes possibly formed in the high-curvature phase preceding the bouncing transition to the phase of standard cosmological evolution. We show that the regime dominated by such a string-hole gas can be consistently described by explicit solutions of the string effective action including first-order alpha' corrections. We present a phase space analysis of the stability of such solutions comparing the results obtained from different actions and including the possibility of O(d,d)-symmetric configurations.File in questo prodotto:
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